<?php

class UserController extends Controller {

    /**
     * Displays a particular model.
     * @param integer $id the ID of the model to be displayed
     */
    public function actionView($id) {
        $this->render('view', array(
            'model' => $this->loadModel($id),
        ));
    }

    /**
     * Creates a new model.
     */
    public function actionCreate() {
        $model = new User;

        if (isset($_POST['User'])) {
            $model->attributes = $_POST['User'];
            if ($model->save()) {
                if (Yii::app()->request->isAjaxRequest) {
                    Yii::app()->user->setFlash('success', 'User has been successfully added to the database.');

                    echo CJSON::encode(array(
                        'status' => 'success',
                        'div' => $this->renderPartial('_user_entry_modal', array('model' => $model), true)
                    ));
                    exit;
                }
                else
                    $this->redirect(Yii::app()->user->returnUrl);
            }
        }

        if (Yii::app()->request->isAjaxRequest) {
            echo CJSON::encode(array(
                'status' => 'failure',
                'div' => $this->renderPartial('_user_entry_modal', array('model' => $model), true)
            ));
            exit;
        }
        else
            $this->render('_user_entry', array(
                'model' => $model,
            ));
    }

    /**
     * Updates a particular model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id the ID of the model to be updated
     */
    public function actionUpdate($id) {
        $model = $this->loadModel($id);

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if (isset($_POST['User'])) {
            $model->attributes = $_POST['User'];
            if ($model->save())
                $this->redirect(array('view', 'id' => $model->id));
        }

        $this->render('update', array(
            'model' => $model,
        ));
    }

    /**
     * Deletes a particular model.
     * If deletion is successful, the browser will be redirected to the 'admin' page.
     * @param integer $id the ID of the model to be deleted
     */
    public function actionDelete($id) {
        if (Yii::app()->request->isPostRequest) {
            // we only allow deletion via POST request
            $this->loadModel($id)->delete();

            // if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
            if (!isset($_GET['ajax']))
                $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
        }
        else
            throw new CHttpException(400, 'Invalid request. Please do not repeat this request again.');
    }

    /**
     * Lists all models.
     */
    public function actionIndex() {
        $dataProvider = new CActiveDataProvider('User', array(
                    'criteria' => array(
                        'condition' => 'access_role <= :accessRole',
                        'params' => array(
                            ':accessRole' => Yii::app()->user->instance->access_role,
                        ),
                    ),
                ));
        $this->render('index', array(
            'dataProvider' => $dataProvider,
        ));
    }

    /**
     * Returns the data model based on the primary key given in the GET variable.
     * If the data model is not found, an HTTP exception will be raised.
     * @param integer the ID of the model to be loaded
     */
    public function loadModel($id) {
        $model = User::model()->findByPk($id);
        if ($model === null)
            throw new CHttpException(404, 'The requested page does not exist.');
        return $model;
    }

    /**
     * Performs the AJAX validation.
     * @param CModel the model to be validated
     */
    protected function performAjaxValidation($model) {
        if (isset($_POST['ajax']) && $_POST['ajax'] === 'user-form') {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }

}
